Finding the Fourth Proportional to 135.42, 202.99 and 54.30
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Solution
The fourth proportional to 135.42, 202.99 and 54.30 is: 81.39
Step by Step Solution
- Step 1: Write the proportion equation
135.42 : 202.99 = 54.30 : x - Step 2: Convert to fraction form
135.42/202.99 = 54.30/x - Step 3: Cross multiply
135.42x = 202.99 × 54.30 - Step 4: Simplify right side
135.42x = 11,022.36 - Step 5: Solve for x
x = 11,022.36/135.42 - Step 6: Final answer
x = 81.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.